Context("when assigning an address to the bridge fails", func() { It("returns the error", func() { netlinker.AddrAddReturns(errors.New("addr add failed")) _, err := factory.CreateBridge("some-bridge-name", address) Expect(err).To(Equal(errors.New("addr add failed"))) }) }) It("sets the bridge link up", func() { _, err := factory.CreateBridge("some-bridge-name", address) Expect(err).NotTo(HaveOccurred()) Expect(netlinker.LinkSetUpCallCount()).To(Equal(1)) Expect(netlinker.LinkSetUpArgsForCall(0)).To(Equal(expectedBridge)) }) Context("when setting the bridge link up fails", func() { It("returns the error", func() { netlinker.LinkSetUpReturns(errors.New("bridge link up failed")) _, err := factory.CreateBridge("some-bridge-name", address) Expect(err).To(Equal(errors.New("bridge link up failed"))) }) }) }) Describe("CreateVxlan", func() { var expectedVxlan *netlink.Vxlan